Alunite and Lawsonite Physical Properties

Alunite

Lawsonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.93.09

1 7.18

1.5 Fracture

Conchoidal, Uneven

White, Yellow, Pale blue, Brittle, Uneven

1.6 Cleavage

On {0001}, perfect

Perfect on {100} and {010}, imperfect on {101}

1.7 Mohs Hardness

3.5-48

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

Not Available

Alunite and Lawsonite Chemical Formula

While comparing Alunite and Lawsonite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Alunite and Lawsonite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Alunite and Lawsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Lawsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Lawsonite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.09 whereas that of Lawsonite is 3.09.